Unable to bind Dictionary with key type "Enum" when key string case i…

…s different (dotnet#71926)

Use ignoreCase=true when parsing enum values.

Fix dotnet#71185

src/libraries/Microsoft.Extensions.Configuration.Binder/src/ConfigurationBinder.cs

@@ -576,9 +576,10 @@ private static void BindConcreteDictionary(
  {
  try
  {
- object key = keyTypeIsEnum ? Enum.Parse(keyType, child.Key) :
+ object key = keyTypeIsEnum ? Enum.Parse(keyType, child.Key, true) :
  keyTypeIsInteger ? Convert.ChangeType(child.Key, keyType) :
  child.Key;
+
  var valueBindingPoint = new BindingPoint(
  initialValueProvider: () =>
  {

src/libraries/Microsoft.Extensions.Configuration.Binder/tests/ConfigurationBinderTests.cs

@@ -491,6 +491,33 @@ public class ByteArrayOptions
  public byte[] MyByteArray { get; set; }
  }
 
+ public enum TestSettingsEnum
+ {
+ Option1,
+ Option2,
+ }
+
+ [Fact]
+ public void EnumBindCaseInsensitiveNotThrows()
+ {
+ var dic = new Dictionary<string, string>
+ {
+ {"Section:Option1", "opt1"},
+ {"Section:option2", "opt2"}
+ };
+
+ var configurationBuilder = new ConfigurationBuilder();
+ configurationBuilder.AddInMemoryCollection(dic);
+ var config = configurationBuilder.Build();
+ var configSection = config.GetSection("Section");
+
+ var configOptions = new Dictionary<TestSettingsEnum, string>();
+ configSection.Bind(configOptions);
+
+ Assert.Equal("opt1", configOptions[TestSettingsEnum.Option1]);
+ Assert.Equal("opt2", configOptions[TestSettingsEnum.Option2]);
+ }
+
  [Fact]
  public void CanBindIConfigurationSection()
  {